Whatever your position, regardless of your personal bias, however objective your view, the departure of Joe Magnacca from Walgreens — he resigned late last month to accept a job as chief executive officer of RadioShack —was certainly one of the stunning developments that have periodically punctuated chain drug retailing in recent years, an event made more startling for its apparent suddenness.

The changes transforming health care delivery, in both Canada and the United States, are creating openings for community pharmacy operators to expand the scope of professional practice. Retailers that are quick and nimble enough to seize the day will not only build their business but enhance patient access, improve outcomes and help limit total health care spending. Rexall Pharma Plus is a case in point.